13C CPMAS NMR investigations of cellulose polymorphs in different pulps

被引：89

作者：

Maunu, S

Liitiä, T

Kauliomäki, S

Hortling, B

Sundquist, J

机构：

[1] Univ Helsinki, Polymer Chem Lab, FIN-00014 Helsinki, Finland

[2] Finnish Pulp & Paper Res Inst, Paper Sci Ctr, FIN-02151 Espoo, Finland

来源：

CELLULOSE | 2000年 / 7卷 / 02期

关键词：

cellulose; crystallinity; polymorphs; C-13 CPMAS NMR; parchmentising;

D O I：

10.1023/A:1009200609482

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

In order to obtain information about the crystallinity and polymorphs of cellulose, and the occurrence of hemicelluloses in pulp fibers, wood cellulose, bacterial cellulose, cotton linters, viscose, and celluloses in different pulps were investigated by solid state C-13 CPMAS NMR spectroscopy. A mixed softwood kraft pulp and a dissolving-grade pulp were treated under strongly alkaline and acidic conditions and the effect on cellulose crystallinity was studied. The presence of different crystalline polymorphs of cellulose and the amounts of hemicelluloses are considered.

引用

页码：147 / 159

页数：13

共 27 条

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